Assembling and disassembling device for rectangular signboard of dangerous goods of transport vehicle

Abstract

The utility model discloses an assembling and disassembling device for a rectangular signboard of a dangerous article of a transport vehicle, which is composed of at least two quick-disassembling assemblies, and each quick-disassembling assembly comprises a positioning plunger, a sleeve, a clamping rod and a sliding block; the sleeve is arranged outside the positioning plunger in a sleeving mode, a key groove and an annular groove are formed in the sleeve, a through groove is formed in the sleeve, the clamping rod is located in the through groove, a first protrusion and a second protrusion are arranged on the positioning plunger, and a reset spring is arranged between the positioning plunger and the sleeve. The state of the sleeve is adjusted in a pressing and rotating mode, the sleeve is switched between the mounting position and the dismounting position in combination with the clamping rod and the sliding block, the signboard can be fixed when the sleeve is located at the mounting position, and the signboard can be dismounted when the sleeve is located at the dismounting position. And moreover, the self structure and the surrounding structure cannot be damaged, and the signboard replacing device is suitable for frequently-used signboard replacing scenes and has the advantage of being reliable in structure.

Description

Technical Field

[0001] This utility model relates to the field of installation technology for rectangular dangerous goods signs, and in particular to a device for installing and removing rectangular dangerous goods signs on transport vehicles. Background Technology

[0002] The rectangular hazardous materials sign installed on the front of hazardous materials transport vehicles must be reusable. However, the existing rectangular hazardous materials signs are generally installed using self-tapping screws, rivets, or bolts, which have significant defects in practical applications.

[0003] Self-tapping screws use thread cutting connections, which can easily cause stripping failure of the base material during repeated disassembly and assembly. In metal fatigue or corrosive environments, violent disassembly is required, which can lead to secondary damage. Bolt connections rely on preload torque control, which carries the risk of tool cutting operations due to rust adhesion. Mechanical friction between the threaded pair and the protective coating can cause the anti-corrosion layer to peel off. Rivet connections require complete destruction of the original connection before replacement.

[0004] All three installation methods share the following technical problems: First, the installation / disassembly process is complex, requires specialized tools, and is time-consuming; second, repeated disassembly and assembly lead to deterioration of connection reliability, posing a potential structural failure risk; third, the installation and disassembly process easily damages the base material and surface protective layer, accelerating corrosion failure; fourth, in highly corrosive environments, coating peeling and metal corrosion create a vicious cycle, significantly reducing the equipment's weather resistance. These defects lead to increased maintenance costs and pose operational safety hazards in scenarios involving emergency repairs or frequent label replacements. Summary of the Invention

[0005] To address the aforementioned technical problems, this utility model provides a device for attaching and removing rectangular dangerous goods identification tags on transport vehicles. To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.

[0006] The present invention adopts the following technical solution:

[0007] A device for installing and removing rectangular dangerous goods identification plates for transport vehicles is provided, comprising at least two quick-release components, wherein the quick-release components include: a positioning plunger, a sleeve, a locking rod, and a sliding block;

[0008] The sleeve is fitted over the outside of the positioning plunger, and a sign mounting rod is provided at the front end of the sleeve. A keyway and an annular groove are provided inside the sleeve. A locking rod is provided at the front end of the positioning plunger. A through groove is provided on the sleeve. The locking rod is located in the through groove and is connected to the sleeve through a compression spring. A first protrusion and a second protrusion are provided on the positioning plunger. A sliding block is provided on the positioning plunger. A return spring is provided between the positioning plunger and the sleeve.

[0009] Furthermore, the sleeve has a cylindrical cavity inside, the bottom sidewall of the cylindrical cavity has a keyway, the rear end of the keyway has an annular groove, the front end of the positioning plunger extends into the sleeve from the rear end opening of the cylindrical cavity, and the locking rod is provided at the position corresponding to the keyway and the annular groove.

[0010] Furthermore, the end of the locking rod is provided with an arc transition surface.

[0011] Furthermore, the sleeve has a through groove that communicates with the cylindrical cavity. A first limiting platform is provided at the outer opening of the through groove, and a second limiting platform is provided on both sides of the inner end of the locking rod. The first limiting platform, the inner wall of the through groove, the second limiting platform, and the outer wall of the locking rod form a spring mounting cavity, and the compression spring is located in the spring mounting cavity.

[0012] Furthermore, a third limiting platform is provided on the cavity wall of the column cavity, a relief groove is formed on the positioning plunger, a return spring is sleeved on the positioning plunger, and one end of the return spring is connected to the groove wall of the relief groove, and the other end is connected to the third limiting platform.

[0013] Furthermore, the positioning plunger has a first protrusion in front of the clearance groove and forms a sliding groove, the sliding block is located in the sliding groove, and the positioning plunger has a second protrusion in front of the first protrusion and forms a locking groove between the first protrusion and the second protrusion.

[0014] Furthermore, the inner rear side of the locking rod has an inclined surface; the rear sides of the first protrusion and the second protrusion are vertical surfaces, and the front sides are inclined surfaces; both sides of the sliding block have inclined surfaces, and the outer edge of the sliding block is a horizontal surface.

[0015] Furthermore, there are four locking rods, which are evenly arranged along the radial direction of the sleeve.

[0016] Furthermore, the rear end of the positioning plunger is provided with a mounting threaded post.

[0017] The beneficial effects of this utility model are as follows: the position and angle of the sleeve on the positioning plunger are adjusted by pressing and rotating, and the sleeve is reset and positioned by combining the locking rod and the sliding block, thereby enabling the sleeve to switch between the installation position and the removal position. When the sleeve is in the installation position, the sign can be fixed, and when the sleeve is in the removal position, the sign can be removed. The structural design of this application not only facilitates the installation and removal of the sign without the need for additional tools, but also does not damage its own structure or the surrounding structure. It is suitable for frequently used sign replacement scenarios. In addition, it also has the advantage of structural reliability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the internal structure of the quick-release component of this utility model when it is in the installation state;

[0020] Figure 2 This is a schematic diagram of the internal structure of the quick-release component of this utility model when it is in the disassembly state;

[0021] Figure 3 This is a schematic diagram of the external structure of the quick-release component of this utility model when it is in the installation state;

[0022] Figure 4 This is a schematic diagram of the external structure of the quick-release component of this utility model when it is in the disassembly state;

[0023] Figure 5 This is a schematic diagram of the front structure of the assembly / disassembly device of this utility model when it is in the installation state;

[0024] Figure 6 This is a schematic diagram of the front structure of the assembly / disassembly device of this utility model when it is in the disassembly state. Detailed Implementation

[0025] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] like Figure 1-6As shown in some illustrative embodiments, a device for installing and removing a rectangular dangerous goods sign for a transport vehicle is provided. The device consists of at least two quick-release components. In use, the quick-release components are fixed to the front grille of the vehicle, and the sign is installed on the quick-release components. The installation and removal of the sign are achieved by operating the quick-release components.

[0027] In this article, the terms "front side," "front end," and "front section" refer to the side closer to the sign, while "rear side" and "rear end" refer to the side closer to the front grille of the vehicle.

[0028] Specifically, the quick-release assembly includes: a positioning plunger 100, a sleeve 200, a locking rod 300, a sliding block 400, a compression spring 500, and a return spring 600.

[0029] The rear end of the positioning plunger 100 is provided with a mounting threaded post 120, and the positioning plunger 100 is fixed to the front grille of the vehicle by the mounting threaded post 120.

[0030] The sleeve 200 has a cylindrical cavity 210 inside. The front end of the positioning plunger 100 extends into the sleeve 200 from the rear end opening of the cylindrical cavity 210, so that the sleeve 200 fits over the front part of the positioning plunger 100 and can move back and forth along the axial direction of the positioning plunger 100. A keyway 220 is formed on the bottom side wall of the cylindrical cavity 210. The bottom of the cylindrical cavity 210 refers to the side of the cylindrical cavity 210 closer to the front end. An annular groove 230 is formed at the rear end of the keyway 220. A locking rod 110 is set at the front end of the positioning plunger 100 at the position corresponding to the keyway 220 and the annular groove 230. When the sleeve 200 is pressed, when the sleeve 200 moves to the rearward position, the locking rod 110 will enter the keyway 220. The design of the keyway 220 limits the locking rod 110, so that the sleeve 200 cannot rotate on the positioning plunger 100. When the sleeve 200 is pushed forward by the reset spring 600, the locking rod 110 will enter the annular groove 230 through the keyway 220. The annular groove 230 is an annular groove formed on the inner wall of the sleeve 200. The locking rod 110 can rotate freely in the annular groove 230. At this time, the limitation on the sleeve 200 can be released, that is, the sleeve 200 can rotate on the positioning plunger 100.

[0031] The end of the locking lever 110 is provided with an arc transition surface 111, which can ensure the smoothness of the locking lever 110 when it moves between the keyway 220 and the annular groove 230.

[0032] A sign mounting rod 240 is provided at the front end of the sleeve 200. An elongated hole is formed in the sign. When the sleeve 200 is rotated to a horizontal position, the sign mounting rod 240 passes through the elongated hole in the sign. Further rotation of the sleeve 200 to a vertical position prevents the sign mounting rod 240 from dislodging from the elongated hole, thus limiting the sign's position and completing the installation. When the sign needs to be removed, rotating the sleeve 200 to a horizontal position releases the limiting effect on the sign, allowing the sign mounting rod 240 to dislodge from the elongated hole and be removed for replacement.

[0033] A through groove 250 is provided on the sleeve 200, which is connected to the cylindrical cavity 210. The locking rod 300 is located in the through groove 250 and can move within the through groove 250. The outer end of the locking rod 300 extends from the outer opening of the through groove 250 and reaches the outside of the sleeve 200. The inner end of the locking rod 300 is used in conjunction with the positioning plunger 100 and the sliding block 400.

[0034] A first limiting platform 260 is provided at the outer opening of the through groove 250, and second limiting platforms 310 are provided on both sides of the inner end of the locking rod 300. The first limiting platform 260, the inner wall of the through groove 250, the second limiting platforms 310, and the outer wall of the locking rod 300 together form a spring mounting cavity 700. The compression spring 500 is located in the spring mounting cavity 700, thereby realizing the connection between the locking rod 300 and the sleeve 200 through the compression spring 500. A first protrusion 130 and a second protrusion 140 are provided on the positioning plunger 100, and a sliding block 400 is provided on the positioning plunger 100 and can move back and forth on the positioning plunger 100. When the positioning plunger 100 moves relative to the sleeve 200, the locking rod 300 retracts into the through groove 250 under the push of the first protrusion 130, the second protrusion 140, and the sliding block 400, and can pop out of the through groove 250 under the push of the compression spring 500.

[0035] A return spring 600 is provided between the positioning plunger 100 and the sleeve 200. Specifically, a third limiting platform 270 is provided on the cavity wall of the plunger cavity 210, a relief groove 150 is formed in the positioning plunger 100, and the return spring 600 is sleeved on the positioning plunger 100, with one end of the return spring 600 connected to the groove wall of the relief groove 150 and the other end connected to the third limiting platform 270. When the sleeve 200 is pressed, the sleeve 200 moves backward, and the third limiting platform 270 compresses the return spring 600. When released, the return spring 600 pushes the third limiting platform 270, causing the sleeve 200 to move forward.

[0036] A first protrusion 130 is provided on the positioning plunger 100 in front of the clearance groove 150, forming a sliding groove 160. The sliding block 400 is located in the sliding groove 160 and can move back and forth within the sliding groove 160. A second protrusion 140 is provided on the positioning plunger 100 in front of the first protrusion 130, and a locking groove 170 is formed between the first protrusion 130 and the second protrusion 140. When the positioning plunger 100 moves relative to the sleeve 200, the positions of the sliding block 400, the first protrusion 130, and the second protrusion 140 will push the locking rod 300 back into the through groove 250, and the positions of the sliding groove 160 and the locking groove 170 will cause the inner end of the locking rod 300 to extend out of the through groove 250.

[0037] There are four locking rods 300, which are evenly arranged along the radial direction of the sleeve 200 to make the force distribution more uniform.

[0038] The inner rear end of the locking rod 300 has an inclined surface; the rear sides of the first protrusion 130 and the second protrusion 140 are vertical surfaces, and the front sides are inclined surfaces; both sides of the sliding block 400 have inclined surfaces, and the outer edge of the sliding block is a horizontal surface. The design of the inclined and horizontal surfaces on each component allows the inner end of the locking rod 300 to cooperate with the sliding block 400, the first protrusion 130, the second protrusion 140, the sliding groove 160, and the locking groove 170 to achieve locking and unlocking between the positioning plunger 100 and the sleeve 200.

[0039] When installing a sign, the quick-release assembly must be switched from the installed state to the disassembled state. When the quick-release assembly is in the installed state, the sleeve 200 is in the installed position, and the inner end of the locking rod 300 is within the sliding groove 160 and located in front of the sliding block 400. First, press the sleeve 200 to move it backward, simultaneously compressing the return spring 600. At the same time, the locking rod 300 drives the sliding block 400 to move backward. After the sliding block 400 reaches the rear wall of the sliding groove 160 and can no longer move, if the sleeve 200 is pressed further, the inclined surface design of the sliding block 400 and the locking rod 300 causes the locking rod 300 to move outward from the sleeve 200. Simultaneously, the compression spring 500 is further compressed until the locking rod 300 retracts entirely into the through groove 250. Continue pressing the sleeve 200. The sleeve 200 drives the locking rod 300 to continue moving backward until the return spring 600 is compressed to its limit. At this time, the inner end of the locking rod 300 crosses the horizontal plane at the outer edge of the sliding block 400 and reaches the rear side of the sliding block 400. The compression spring 500 is released, pushing the locking rod 300 to move inward. The inner end of the locking rod 300 enters the sliding groove 160.

[0040] After release, the sleeve 200 is pushed forward by the return spring 600. At the same time, the inner end of the locking rod 300 drives the sliding block 400 to move forward until the sliding block 400 reaches the front wall of the sliding groove 160, that is, the rear end of the first protrusion 130, and then stops moving. Since the locking rod 300 is assembled onto the sleeve 200, and the return spring 600 pushes the sleeve 200 forward, the locking rod 300 is also driven forward by the sleeve 200. The inner end of the locking rod 300 changes from contacting the rear inclined surface of the sliding block 400 to contacting the outer horizontal surface of the sliding block 400. The locking rod 300 gradually moves outward, and at the same time the compression spring 500 is compressed. During the release process, the reset spring 600 pushes the sleeve 200 simultaneously, allowing the inner end of the locking rod 300 to quickly pass through the first protrusion 130. After passing through the first protrusion 130, the locking rod 300 extends under the push of the compression spring 500 and is blocked in the locking groove 170 by the second protrusion 140. At this time, the locking rod 110 enters the annular groove 230 from the keyway 220.

[0041] Rotate the sleeve 200 90 degrees to bring the sign mounting rod 240 to a horizontal position. At this point, the quick-release assembly is in the disassembled state, and the sleeve 200 is in the disassembled position. The sign can now be installed. Next, rotate the sleeve 200 counterclockwise 90 degrees to bring the sign mounting rod 240 to a vertical position to secure the sign. Then, press the sleeve 200 again to move it backward. Simultaneously, the locking rod 110 enters the keyway 220, preventing the sleeve 200 from rotating. The locking rod 300 moves backward along with the sleeve 200 until its inner end passes the first protrusion 130 and enters the sliding groove 160, reaching the front end of the sliding block 400. At this point, the sleeve 200 returns to the installation position, and the quick-release assembly is in the installation state.

[0042] This application adjusts the position and angle of the sleeve 200 on the positioning plunger 100 by pressing and rotating. Combined with the locking rod 300 and the sliding block 400, the sleeve 200 is reset and positioned, allowing it to switch between an installation position and a removal position. In the installation position, the sleeve 200 can fix the sign; in the removal position, the sleeve 200 can remove the sign. This structural design facilitates the installation and removal of signs without the need for additional tools, enabling quick assembly and disassembly and improving sign replacement efficiency. Furthermore, this structural design does not damage its own structure, the vehicle structure, or the sign during assembly and disassembly, ensuring structural durability and suitability for frequently used sign replacement scenarios. It also boasts the advantages of structural reliability and stability.

[0043] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A device for attaching and removing rectangular dangerous goods identification plates on transport vehicles, characterized in that, It consists of at least two quick-release components, each quick-release component including: a positioning plunger, a sleeve, a locking rod, and a sliding block; The sleeve is fitted over the outside of the positioning plunger, and a sign mounting rod is provided at the front end of the sleeve. A keyway and an annular groove are provided inside the sleeve. A locking rod is provided at the front end of the positioning plunger. A through groove is provided on the sleeve. The locking rod is located in the through groove and is connected to the sleeve through a compression spring. A first protrusion and a second protrusion are provided on the positioning plunger. A sliding block is provided on the positioning plunger. A return spring is provided between the positioning plunger and the sleeve.

2. The device for installing and removing a rectangular dangerous goods identification sign for a transport vehicle according to claim 1, characterized in that, The sleeve has a cylindrical cavity inside, and a keyway is formed on the bottom side wall of the cylindrical cavity. An annular groove is formed at the rear end of the keyway. The front end of the positioning plunger extends into the sleeve from the rear end opening of the cylindrical cavity, and a locking rod is provided at the position corresponding to the keyway and the annular groove.

3. The device for installing and removing a rectangular dangerous goods identification sign for a transport vehicle according to claim 2, characterized in that, The end of the locking rod is provided with an arc transition surface.

4. The device for installing and removing a rectangular dangerous goods identification sign for a transport vehicle according to claim 3, characterized in that, The sleeve has a through groove that communicates with the cylindrical cavity. A first limiting platform is provided at the outer opening of the through groove, and a second limiting platform is provided on both sides of the inner end of the locking rod. The first limiting platform, the inner wall of the through groove, the second limiting platform, and the outer wall of the locking rod form a spring mounting cavity, and the compression spring is located in the spring mounting cavity.

5. The device for installing and removing a rectangular dangerous goods sign for a transport vehicle according to claim 4, characterized in that, A third limiting platform is provided on the cavity wall of the column cavity, a relief groove is opened on the positioning plunger, a return spring is sleeved on the positioning plunger, and one end of the return spring is connected to the groove wall of the relief groove, and the other end is connected to the third limiting platform.

6. The device for installing and removing a rectangular dangerous goods identification sign for a transport vehicle according to claim 5, characterized in that, The positioning plunger has a first protrusion in front of the clearance groove and forms a sliding groove. The sliding block is located in the sliding groove. The positioning plunger has a second protrusion in front of the first protrusion and forms a locking groove between the first protrusion and the second protrusion.

7. The device for installing and removing a rectangular dangerous goods sign for a transport vehicle according to claim 6, characterized in that, An inclined surface is provided on the rear side of the inner end of the locking rod; The rear sides of the first protrusion and the second protrusion are vertical surfaces, and the front sides are inclined surfaces; Inclined surfaces are provided on both sides of the sliding block, and the outer edge of the sliding block is a horizontal surface.

8. The device for installing and removing a rectangular dangerous goods identification sign for a transport vehicle according to claim 7, characterized in that, There are four locking rods, which are evenly arranged along the radial direction of the sleeve.

9. The device for installing and removing a rectangular dangerous goods identification sign for a transport vehicle according to claim 8, characterized in that, The rear end of the positioning plunger is provided with a mounting threaded post.

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